Well pump



E. AI KLIEWER June 22,1937.

WELL PUMP Filed May 2 2, 1956 4 Sheets-Sheet l ATTORNEY.

June 22, 1937.

E. A. KLIEWER 2,084,645

WELL PUMP Fild May 22, 1936 4 Sheets-Sheet 2 L E'IE-Z- IN VE OR. BY

ATTORNEY.

June 22, 1937. E. AfKLlEWER WELL PUMP Filed May 22, 19:56 4 Sheets-Sheet3 IN VENT OR.

zalaawAmzzep ATTORNEY.

June 22, 1937. .E. A. KLIEWER 2,084,645

7 WELL PUMP Filed May 22, 1936 4 Sheets-Sheet 4 ATTORNEY.

Patented June 22, 1937 UNITED STATES PATENT OFFICE WELL PUMP Edward A.Kliewer, Longview, Tex.

Application May 22, 1936, Serial No. 81,179

7 Claims.

This invention relates to well pumping equipment and it has particularreference to an apparatus for reciprocating the pump rods in oil andother wells.

The principal object of the invention is to provide in a well pumpingapparatus a means intermediate the power and the well for materiallyincreasing the rectilinear travel of the pump rods over the distanceheretofore resulting from the travel of the walking beam, that is tosay, with the improvements alforded by the invention, conventionaltravel of the walking beam will substantially double the stroke of thepump rods.

Another'object of the present invention is to increase, by reason of thelonger stroke obtained, the production of a well which is obviously dueto the fact that the column of fluid elevated is greater than thatraised by the ordinary stroke and without requiring additional power inso do- Still another object of the invention is minimized wear on therods and valves in proportion to the quantity of fluid displaced.Moreover, the movement transmitted to the polished rod through thewalking beam is strictly perpendicular, hence the wear on the polishedrod is negligible, and as a consequence, replacements of packing in thestuifing box are not as frequently required as under conventionalcircumstances.

With the foregoing objects as paramount, the invention has other andlesser objects which will become manifest as the description proceeds,taken in connection with the accompanying drawings, wherein:

Figure 1 is a side elevation showing the pump of the invention.

Figure 2 is a front elevation.

Figure 3 is a plan view of the gears on line 33 on Figure 2.

Figure 4 is an elevation of Figure 3.

Figure 5 is a fragmentary perspective view showing the support for thevertically reciprocable rack bar.

Figure 6 is a fragmentary plan view of a modi- 5 fied form of theinvention.

Figure 12 is a fragmentary front elevation of the modified form of theinvention.

Continuing with a more detailed description of the drawings, Idesignates a base structure, preferably of I-beams, superimposed uponwhich is a Samson post 2 suitably braced at 3 and 4. A jack post 5 isdisposed on the rearmost portion of the base I and braced by angularmembers 6. The top of the jack post 5 supports a bearing 1 in which isjournaled the stub shaft 8 of a crank 9.

To the crank 9 is pivotally connected at a the end of a pitman arm ID,the upper end of the latter being provided with a stirrup H whichreceives an end of the walking beam I2.

The walking beam is fulcrumed at b in the bearing 13, superimposed uponthe Samson post 2.

It is a fact known to those skilled in the art that by lengthening thestroke of the pump rods in the well without adding to the amount ofpower required to actuate the walking beam, a. considerable saving infrictional wear on the rods and valves, due to vibration, will beeffected. Of the greatest importance however, is the fact that by alonger stroke of the pump, more fluid per pump cycle is displaced.

Heretofore, efforts to increase the length of the stroke of a pump havebeen more or less confined to the power end of the walking beam. Thepresent invention is, when a walking beam is employed, effective on theoperative end of the walking beam, although it will become apparent thatthe walking beam may be omitted and that a power source can be disposedadjacent the well and through the elements of the invention the pumprods may be reciprocated with practical efficiency.

Accordingly, and with reference to Figures 1, 2 and 3, the inventionprovides a primary rack bar M which, at its lower end is connected tothe polished rod [5, which latter in turn is connected to the string ofpump rods, not shown, in the well. On either side of the rack bar I4 isa channel iron I6 (Figures 3 and 5), providing tracks for rollers Hwhich serve to constrain the rack'bar to move perpendicularly.

These rollers are supported by brackets I8 or equivalent means, whichare in turn supported upon cross-members I9, carried by standards 20.

On either side of the rack bar 14, there is provided stub shafts 2|,each carrying a small gear 22 and a large gear 23. The ends of theseshafts are journaled in bearings 724 mounted on the cross members 19.

It will be observed that while the ratio of the gears 22 and 23 in thedrawings is approximately 1-2, such ratio may be varied withoutdeparting from the intent of the invention since it is obviously theobject to increase predeterminately the displacement of the pump rodstring over the vertical displacement of the operative end of thewalking beam.

The smaller gears 22, as apparent especially in Figure 3, engage thegear teeth of the secondary racks 25 which are disposed in parallelrelation ship with each other, and with the rack M. It is to these racks24 that the operative end of the walking beam i2 is connected, as shownin Figure 1.

In order that the racks 24 will be permitted to travel verticallywithout lateral stresses, the walking beam i2 is flexibly connectedtherewith through the medium of a cable 25, connected to the horse head26, with equalizer wheel 2'! and rein spacers 28.

It is apparent from the foregoing that through the flexible connectionafforded by the cable 25, the rack bars 2 3 are reciprocated vertically,following the guide of the gears 22. The gears 22 are thus rotated torotate the shafts 2! on which they are amxed. Such rotation similarlyoperates gears 23 of greater ratio than gears 22 and these gears, beingin engagement with the teeth of the rack bar it, move the latter,similarly but twice the distance of the displacement of the companionrack bar 2 Thus the rod string to which the bar M is connected, isreciprocated a distance much greater than the vertical displacement ofthe end of the walking beam I 2.

In Figures 6 and 7 is shown a modified view of a means for accomplishinga result similar to that just described. In these figures, the referencenumeral 29 denotes a yoke or horse head in the form of two arcuatemembers, one being disposed on either side of walking beam 30. Thearcuate surfaces of the members 29 are provided with gear teeth whichenmesh the teeth of gears St. The gears 3! are aifixed to a stub shaft32 and upon this same shaft is mounted a gear 33 of greater ratio thangears 3|.

Gear 33 is, as apparent in Figures 6 and 7, engaged with a gear rack 34.This gear rack is connected to the string of pump rods in the wellalthough the rods are not shown.

In order to hold the rack 34 in operative relationship at all times withthe gear 33, a roller 35 bears thereagainst and is supported by achannel iron or an equivalent means 36, extending upwardly between thearcs 29 and braced by suitable means 3'? adjacent its lower end.

It is apparent from the foregoing that the distance the rack bar 34 isdisplaced will be substantially greater than the vertical displacementof the walking beam 30, due to the difference in ratio between the gears3| and the gear 33..

In Figure 8 is shown an example of multiple gearing in which the rackbars 38 are comparable to rack bars 24 in Figure 3 and are reciprocatedindirectly by intermediate gears 39, which latter are rotated by gears40 on shafts 4!.

In some cases, it will be desirable to provide means to effectadjustment of the pumping apparatus over the well hole. Such alignmentis afforded by the medium shown in fragmentary detail in Figure 9. Inthis view the beams l are shown as being provided with elongated slots42 to receive the bolts 0 of the gusset plate 43. The shape of theseslots enables the plates 43, supporting the standard 20 to be laterallydisplaced,

thereby making it possible to align the pumping apparatus with the wellhole.

It is to be noted that the particular supporting structure for the pumpis so constructed and disposed relative to the well hole that when awell cleaning operation is necessary or any other operation requiringdisplacement of the pump from the well, such displacement is made easyand inexpensive.

With reference to Figures 10 to 12 inclusive, a further modified form ofthe invention is shown. In these figures, M denotes the walking beam,having the usual horse-head S5 thereon and cable 46, surrounding thesheave ll. The sheave M carries a yoke d8 which supports a hanger 9 fora roller chain 50.

As apparent in Figure 12, the chain d depends and passes under sprocketsti on either side of the walking beam and which sprockets are mounted onstub shafts 52, journaled in bearings 53 on the standards 54 and 55,spaced apart.

Immediately above the sprockets 5i are smaller idling sprockets 5%, overwhich chains 56 pass, the latter continuing downward between the shafts52 to support a weight 5?, by means of a flexible member 58. The weight5? operates in a suitable guide 59 intermediate the two standards 5 iand 55 and it serves as a counter-balance for the load imposed on thewalking beam, it being apparent that the wrapping of the chain 58 aboutthe sprockets provides for reverse movement of the weight relative tothe walking beam 44.

Mounted also on the shafts 52 are gears 66, whose teeth engage those ofa rack bar 6!, the lower end of which is connected to the polished rod62, the latter in turn being joined to the pump rod assembly (not shown)in the well.

Accordingly, upon downward stroke of the walking beam 44, the weight 51moves downward in its guide 59, but the rack bar 6! moves upward throughthe action of gears 69, thereby lifting toward the surface a column offluid. It is apparent that due to the difference in ratio between thegears 68 and sprockets 5i the displacement of the rack bar 61 and hencethe pump rods will be much greater than the vertical displacement of theoperative end of the walking beam M. Also, it will be noted that theweight 57 is counter to that of the load lifted by the walking beam,counter-balancing the rods and fluid and relieving the power of theexcess load.

Manifestly the construction shown and described is capable ofconsiderable modification and such modification as may be consideredwithin the scope and meaning of the appended claims is also consideredwithin the intent of the invention.

What is claimed is:.

1. In a well pumping apparatus, a primary rack bar having connectionwith the pump rods in said well, gears disposed on shafts and on eitherside of and operatively engaging the teeth of said primary rack bar,gears of lesser ratio than said first gears and affixed on the shafts ofsaid first gears, a secondary rack bar for actuating said latter gearsand means for reciprocating said secondary rack bar for similarly movingsaid first rack bar, thereby to eifect reciprocation of said pump rods.

2. Well pumping apparatus including in combination with a string of pumprods in said well, a primary rack bar connected to said string of pumprods, gear means engaging said rack bar, a secondary rack bar insubstantially parallel relationship with said first rack bar, secondgear means of lesser ratio than said first gear means and rotatabletherewith for reciprocating said secondary rack bar to translate motionto said first gear means and rack bar, thereby to effect rectilineartravel of said string of pump rods.

3. Well pumping apparatus including in combination with a string of pumprods in said well, primary and secondary rack bars, the primary 7 rackbar being connected to said string of pump rods, means for imparting tosaid secondary rack bar a reciprocating motion and intermediate meansfor similarly actuating the companion rack bar but in displacing thesame to a greater degree than the displacement of said first bar.

4. Pumping apparatus for wells including in combination with a string ofpump rods in said wel1,'a walking beam, a primary rack bar havingconnection with said rod string, a secondary rack bar, means foractuating said walking beam and means carried by the operative end ofsaid walking beam, having operative connection with said secondary rackbar whereby to effect greater vertical displacement of said string ofpump rods through said primary rack bar than the vertical displacementof the operative end of said walking beam.

5. Apparatus for displacing fluid in wells comprising in combinationwith a string of pump rods, a primary rack bar connected to said rodstring,

means for constraining said bar to move rectilinearly, a secondary rackbar, a walking beam for actuating said secondary rack bar and gear meanstransmitting motion from said secondary to said primary bar for causingsaid latter bar to move substantially twice the distance of the verticaldisplacement of the operative end of said walking beam.

6. Apparatus for pumping wells including in combination with a string ofpump rods, a walking beam, a vertically reciprocable and primary rackbar member connected to said string of pump rods, and a secondary rackbar actuated by the operative end of said walking beam for reciprocatingsaid primary bar whereby the displacement thereof will be substantiallygreater than the vertical displacement of the operative end of saidwalking beam.

7. A well pumping apparatus including in combination with a string ofpump rods in a well, a walking beam, flexible means operativelyconnecting the operative end of said Walking beam operatively to saidpump rod string, said means being capable of displacing said rod stringto a degree greater than the vertical displacement of the operative endof said walking beam and means suspended by said flexible means forcounterbalancing the weight of said rod string and its load.

EDWARD A. KLIEWER.

